[v4,0/4] aspeed-vuart: generalized DT properties

Message

Zev Weiss April 2, 2021, 6:27 p.m. UTC

This series generalizes the aspeed-vuart driver's device tree
properties to cover all the attributes it currently exposes via sysfs.

The aspeed,sirq-polarity-sense property was a bit of a design mistake
in that it ties Aspeed VUART SIRQ polarity to SCU register bits that
aren't really inherently related to it; the first patch in this series
deprecates it (though we hope to eventually remove it).

The rest of the series adds two new properties, aspeed,lpc-io-reg and
aspeed,lpc-interrupts.  The latter allows describing the SIRQ polarity
(along with the interrupt number) directly, providing a simpler
replacement for aspeed,sirq-polarity-sense.


Changes since v3 [2]:
 - renamed properties to match aspeed,ast2400-kcs-bmc

Changes since v2 [0]:
 - expanded to also handle sirq number and lpc address in addition to
   sirq polarity
 - added default settings if DT properties not specified
 - refactored existing sysfs code slightly, adding range checks
 - cleaned up 'make dt_binding_check' warnings

Changes since v1 [1]:
 - deprecate and retain aspeed,sirq-polarity-sense instead of removing it
 - drop e3c246d4i dts addition from this series


[0] https://lore.kernel.org/openbmc/[e-mail]/
[1] https://lore.kernel.org/openbmc/[e-mail]/
[2] https://lore.kernel.org/openbmc/[e-mail]/


Zev Weiss (4):
  dt-bindings: serial: 8250: deprecate aspeed,sirq-polarity-sense
  drivers/tty/serial/8250: refactor sirq and lpc address setting code
  drivers/tty/serial/8250: add aspeed,lpc-io-reg and
    aspeed,lpc-interrupts DT properties
  dt-bindings: serial: 8250: add aspeed,lpc-io-reg and
    aspeed,lpc-interrupts

 .../devicetree/bindings/serial/8250.yaml      | 28 +++++-
 drivers/tty/serial/8250/8250_aspeed_vuart.c   | 95 +++++++++++++++----
 2 files changed, 103 insertions(+), 20 deletions(-)